A&E True Crime spoke with forensic podiatrist Dr. Michael Nirenberg to learn about the differences between footprints and fingerprints and why foot evidence can be so valuable to law enforcement.

Cheyenne Rose Antoine of Saskatoon, Canada made headlines in January 2018 for her Facebook selfie. But this was no ordinary photo: It was key murder evidence. We investigate social media's role in crime-solving and evidence-gathering.

On July 20, 2012, 12 people were killed and dozens more injured at a midnight showing of Batman: The Dark Knight Rises, when James Holmes opened fire in an Colorado theater. We spoke with forensic psychiatrist Dr. William H. Reid, who did extensive interviews with Holmes, about the mass shooter's mental state.

After the recent high-profile murder of Bronx teen Lesandro Guzman-Feliz, the spotlight is on the gang cops say is responsible, the Trinitarios, and the unique reaction to the violence from the community.

Professors Bryanna Fox and Edelyn Verona of the University of South Florida are leading a project that evaluates all inmates that come through the Pasco County jail to compare people who are arrested for domestic violence to people arrested for burglary to people arrested for murder.

Meet Suge, a top lieutenant with the notorious gang Sex Money Murder (or SMM) as he's preparing to murder, in this excerpt from Jonathan Green's book, 'Sex Money Murder: A Story of Crack, Blood, and Betrayal.'

A&E True Crime talks to retired FBI profiler Dr. Mary Ellen O'Toole about serial killers, like Ted Bundy and the Toolbox Killers, who had well-defined victim preferences.

Rebecca Morris, a New York Times bestselling author and high-school classmate of murder victim Dick Kitchel, returns to her hometown of Corvallis, Oregon to explore how the cold case murder changed the town and the lives of Kitchel's friends.

There were three homicides or suspicious deaths on cruise lines operating in U.S. ports in 2017. And authorities have also reported over a hundred other crimes, including sexual assaults and kidnappings. But some advocates say even more crimes are taking place aboard.

Bryanna Fox, Ph.D, former FBI agent and researcher at the bureau's Behavioral Science Unit, talks to A&E True Crime about whether convicted serial killers are the key to catching active serial killers.